Is this the one you purchase?

https://www.amazon.com/dp/B085J2W3JN/ref=cm_sw_r_cp_apa_fabc_PGRSRJ4FGGA85XVGQP0S?psc=1

I paid 25 for 4 a while back. Their price went up but still cheaper than the elegoo one https://www.amazon.com/dp/B085J2W3JN/ref=cm_sw_em_r_mt_dp_498YK3FEKA4JYKHE7T9B?_encoding=UTF8&psc=1

This is what I’ve been using:

FEP Film for UV 3D Printers | 0.15mm Thick | 4-Sheets | 280mm x 200mm Per Sheet | HD Optical Grade | Available in 4 Thicknesses https://www.amazon.com/dp/B085J2W3JN/ref=cm_sw_r_cp_api_i_rD-.EbVMVKAFB

Cheap and it works great!

My epax came with a nfep, I don't feel it was all that and a bag of chips.

I have been using these .15 from Amazon and they are still crystal clear after 2 months of 18-20 hours a day printing.

https://www.amazon.com/dp/B085J2W3JN?ref=ppx_pop_mob_ap_share