Welcome to the forum! I’m not an expert and I hope someone more experienced than me will be along to help you. In another thread someone mentioned this company (here’s a link to the t8 style led bulbs) https://www.hyperikon.com/led/garage-shop/led-tubes/
I think their prices look good and I like that they have warm white and hi CRI. I would look at getting some cheap fixture from one of the places you mentioned above and putting those bulbs in it. I hope that is helpful.