Need help finding the right product

[jkthomsen9]

I would like to buy 6 identical tablets to run herolab on for my group. Unfortunately I do not have an unlimited budget. These tablets would only be used for gaming, therefore running HL and a browser at www.d20pfsrd.com. I am leaning toward windows based as I have never owned an apple product, but I am looking for the most bang for the dollar. It may be crazy talk but I am looking to spend around $50.00 a tablet, so older models that will run HL well.

Questions I need help with.

1. What size screen do I need for the players to be able to use HL at the table?
2. dose anyone know a website I can buy older tablets in bulk?
3. suggestions on which tablet to buy and why.