300-500 retail. I would try this for a year, if no one buys it, then 2 months before it expires, let it go on an auction at somewhere like flippa, you might get a 30-50 and hence return what you paid for it. As others said here, check how you would think about it in real life, would you say dvd rents or rental or rentals? people buy domains to build information sites or a business and in your case its a business, and no business is likely to choose rents. just my 2 cents. good luck.