Yes, you can. We have served many logo designers in the past.
We do not have special reseller packages, but anyone can buy a logo from Biz-Logo and resell it at a profit. Design skill is not a requirement of course (we take care of the design part). All you need to do is forward the designs to your client and send us their feedback. This is a great way for consultants, hosting companies, accountants etc. to offer a top-notch logo design service to their clients. If you reach business owners, you qualify :)
We realize that you might not want these logos to pop up in our portfolio later. If you're reselling logos, please mention to your designer that you would like the logo excluded from our portfolio.