Silk Road forums

Discussion => Silk Road discussion => Topic started by: friendlyoutlaw on March 10, 2012, 01:34 am

Title: Confusion over SR commission structure
Post by: friendlyoutlaw on March 10, 2012, 01:34 am
So, the commission is variable with this rate structure:

10% of the first $50
8.5% of $50 - 150
6% of $150 - 300
3% of $300 - 500
2% of $500 - 1000
1.5% for everything over $1000

I remember reading the commission was based on the entire purchase, so for example if you bought 100 of a $5 item, the commission would be as if you bought one $500 item.

However, look at the price if you get add items with multiple quantities. It's as if the commission is calculated into the item price, and then multiplied by the quantity, when what should happen is the pre-commission price should be multiplied by the quantity and THEN the commission calculated.

Example, let's say an item costs $50 before commission. If you bought one, the true price would be $55. If you bought two, the true price should be $109.25. (10% on the first 50, 8.5% on the second 50). But it's not. The price ends up being $110.

Am I missing something here? This doesn't look like it's being calculated correctly.
Title: Re: Confusion over SR commission structure
Post by: Dread Pirate Roberts on March 10, 2012, 07:29 am
Good catch.  I think the issue was that the shopping cart page was not reflecting the true total amount.  Should be sorted out now.  If you have any discrepancies on your account, just message support with the details.
Title: Re: Confusion over SR commission structure
Post by: friendlyoutlaw on March 10, 2012, 11:36 am
I'm just glad I was able to contribute something back to SR!
Title: Re: Confusion over SR commission structure
Post by: friendlyoutlaw on March 10, 2012, 12:06 pm
Hmm...something still doesn't seem right.

Let's use Rook as an example, as Rook was a pioneer in using the unit pricing to enable the purchase of varying amounts of cannabis. Quoting from their page:

Quote
Each product will have a low unit price somewhere between $9 - $18. Each unit will afford the buyer *0.6g* of product EXCEPT at the following quantity markers:

(5)units = 3.5g (1/8oz)
(8)units = 7g (1/4oz)
(13)units = 14g (1/2oz)
(23)units = 28g (1oz)
*(44)units = 56g (2oz)

Ok, cool, so I pull up an item they have sufficient quantity of, Grape Wreck:

http://silkroadvb5piz3r.onion/silkroad/item/ed1b4baf74

$15 (3.02 BTC at the moment) per unit.

So, I add it to my shopping cart, and change the units to 23. I would expect the new price to be somewhat lower than 23 x 3.02 BTC, because the 3.02 BTC price is calculated with a 10% commission, and this order would be over $300 so $250+ of the order will be at a commission less than 10%.

However, much to my surprise, the total shows as 69.53 BTC. When I multiply 3.02 x 23, I get 69.46. Ok, so it must be that the price is really 3.023 btc per unit. However, yeah, it's still not reflecting the varying price.

Here's my best guess at what the price should be:

We start with $15, and know that has a 10% commission. In other words, 15 = (True Cost) x (1.1), so true cost is something like $13.64 (if we round up).  23 x $13.64 = $313.72.

Commission would be $5 on the first 50, $8.50 on the portion from $50-150, $9 on the portion from $150-300, and $0.41 on the remaining $13.72. Adding up the commissions, we get $22.91, for a grand total of $336.63. Using the same bitcoin conversion of $4.96/btc that was being used earlier, we find that rather than a grand total of 69.53 btc as my shopping cart shows, it instead should be 67.87 btc.

Please feel free to correct something if I miscalculated.
Title: Re: Confusion over SR commission structure
Post by: oso on March 11, 2012, 01:46 am
Ya even more scary is my Purple Kush for sale here: silkroadvb5piz3r.onion/silkroad/item/63a38de84c

is listed at 311.90. This is post commision. I have my price set at 290.

290 * 6%   (6% of $150 - 300)  =  17.40

290+17.40=307.40 not 311.90

Unless
Commission would be $5 on the first 50, $8.50 on the portion from $50-150, $9 on the portion from $150-300.
5+8.50+9=22.50
290+22.50=312.50

something is off??
Title: Re: Confusion over SR commission structure
Post by: mseller on March 11, 2012, 02:27 am
@oso
You should calculate with display price in bitcoin. If you have display in $ it will give you average from MtGox.
Title: Re: Confusion over SR commission structure
Post by: oso on March 11, 2012, 06:48 pm
@oso
You should calculate with display price in bitcoin. If you have display in $ it will give you average from MtGox.

MMkay..
my price 28g Purple Kush = 290 (52.25) which is actually (5.50 per btc which it is not)
52.25*6%=3.13
52.25+3.13=55.38

SR price 28g Purple Kush = 354.71(63.91)
More than 15% SR fee!! WOw!!
Somewhere there is more commission being added to our products.
Something is wrong here.
Title: Re: Confusion over SR commission structure
Post by: mseller on March 11, 2012, 07:01 pm
@oso
You should calculate with display price in bitcoin. If you have display in $ it will give you average from MtGox.

MMkay..
my price 28g Purple Kush = 290 (52.25) which is actually (5.50 per btc which it is not)
SR price 28g Purple Kush = 354.71(63.91)

Something is wrong here.
I agree, something is wrong...
I just check price and for 28g Kush =63,91 btc

And under you account tab it says price = 52.25 btc   ?
And on settings you set pre-commission pricing?
Title: Re: Confusion over SR commission structure
Post by: oso on March 11, 2012, 08:33 pm
@oso
You should calculate with display price in bitcoin. If you have display in $ it will give you average from MtGox.

MMkay..
my price 28g Purple Kush = 290 (52.25) which is actually (5.50 per btc which it is not)
SR price 28g Purple Kush = 354.71(63.91)

Something is wrong here.
I agree, something is wrong...
I just check price and for 28g Kush =63,91 btc

And under you account tab it says price = 52.25 btc   ?
And on settings you set pre-commission pricing?


Yep, looks like SR is getting 15% PLUS off the top of my 1 oz of herb sale, not too bad for him not the consumer.
Title: Re: Confusion over SR commission structure
Post by: Dread Pirate Roberts on March 12, 2012, 04:23 am
I looked everything over again and it appears to be in order.  If we look at the Grape Wreck (http://silkroadvb5piz3r.onion/silkroad/item/ed1b4baf74), one unit currently costs 3.07 btc or roughly $15.  If we increase the quantity to 20, the price becomes 60.04 btc or about 3 btc per item ($14.67).  This is congruent with the current commission schedule.

Regarding oso's purple kush, he is using pre-commission pricing and dollar pegging.  The pre-commission price is set to $290.  After commission, this is $311.9 or about 7.6% commission.  At the current rate of 4.89 btc per usd, the current in-cart price of 63.78 btc is correct.  I'm not sure why you were seeing 52.25 btc, but at the current rate it should be more like 59.30 btc.
Title: Re: Confusion over SR commission structure
Post by: friendlyoutlaw on March 12, 2012, 10:14 am
Perhaps I had some cacheing or some other issue.

I do see it working properly now.

When I pick the Grape Wreck with quantity 1, it's 3.07 btc per unit, but when I do 20 units it drops the per unit price to 3 btc per unit. I'm not going to bother with the math right now, but I'm confident in things because before the price per unit wouldn't drop when I adjusted the quantity.

Thanks!