The Ipad air 2 is 399 but you can find a refurbished one for 350 and maybe 300 (depending on website). The ipad air (1gb of ram) may not be able to run IF in a few months or a year since updates are happening and you would have to run on lowest settings possible. the new ipad mini is all right. Just keep in mind 2gb of ram for apple devices and they are androids/kindle/amazon that can run IF. but make sure its either a android or apple device since those are updated heavily. try B&H photo or apple refurbished section on its website. Need any tips or help PM me
One that is Android: Asus ZenPad S8 is a good tablet. I recommend the 4GB RAM and 64GB storage model if you wanna play it safe. The battery life is pretty bad (5hrs) but if you have a charger it’ll be fine. The 2GB RAM and 32GB model is also great.