With a $1500 budget, you can get a Wahoo trainer and ride on Zwift. Zwift membership is $15/mo. A standard trainer won't work with Zwift because it requires bluetooth to transmit what you're doing. Without it, your character on the screen will just sit there. Your alternative is the old-fashioned one: get a standard mag-type trainer and watch a video while your 'riding.' If you can't ride a regular bike, what are you going to ride on the trainer?