Re: PayPal and eCommerce
In my experience, I've had a better experience selling to customers directly through my website using PayPal than via eBay.
Reason being is, a) when something goes wrong, the customer contacts you to solve the issue, and doesn't open a case on ebay and leave it to ebay to deal with on their behalf, and b) You've guessed it, no ebay resolution centre, so one less issue to deal with.
In terms of risk, I can't see it being much higher, so long as you have a professional looking website, social media links, and all in all, make yourself look 'well established', you should be good to go.
Finally, since your selling solely via PayPal, you need to consider their terms/policy carefully, one slip up, and they'll have you. | 
