Hey I paid $100 for 6 months of the Tabletopia game building engine to prototype my Board Game and I would love to share it with other developers (no cost) if you are interested in forming a playtesting group.
I'm not using it as much as I thought I would, partly because I have a slow-ass computer, but mostly due to a lack of a consistent regular testing group.
Ideally i would like 3 other people who are looking to create games on Tabletopia and can commit 2 hours, one night a week to a rotating play test. I'm on AEST (GMT+10) and can do Sunday nights preferably 8-10pm.
I'm happy to help you get your head around how the engine works, and help with initial setup. I found it pretty easy to use but requiring some patience. Best for designers who have some Photoshop skills to create and update the game mockups, even better if you have developed print files already.
Reply here if you are interested and let me know a little about your game. I have had one other friend share the account login and there didn't seem to be any problems logging in from different locations.
Let me know if you have any questions.
Cheers,
Ben