I think I agree with Beer man. If you already have 22 waiting to locate how long is it going to take you to get 65 more located? Are you going to locate yourself or hire a locator? That won't be cheap if hiring one. No sense in having them sit around collecting dust.
Never panic in a business deal. The one who blinks first loses. He is right they could be bluffing to get you to come up in your price. I'd give it a few days to see if they come back to you. Worse case scenerio is they don't and you lose nothing. There will always be cheap Vendstars for sale. ALWAYS!