I do not vend but I would say $1000 is on the small side to become a vendor, DPR is going to higher the bond so you can expect to lose $300 - $400 already for a while until you get it back. Then you have to buy your product and buy shipping material such as a label printer, then you have to worry about Bitcoin price fluctuations which could damage your profit hugely if you're only start with small sales.