Hi everybody. I am about to launch a new software but before I do so I want to do some proper testing. For that I will need a bunch of beta testers. Since I need to test my entire setup including my payment solution, I would like to ask beta testers to pay $5 for a subscription. The first week is completely free, so if a user don't want to pay he can simply cancel the subscription within the first week and he wont be charged anything. My question is if I need sales thread to do this? Or will it be OK to advertise for beta tester in the main forum? Remember that if a user cancels his subscription within the first week, he won't be charged anything. The software is very mature and testers will get a very useful tool for a very low price. I will ask the beta testers to fill out a questionnaire and to give me feedback.