Kinda Urgent- blank puzzle!

hey guys, as i was doing some research, i came across this website that sells blank jigsaws and the right amount of pieces that we need for our animation. U can get 2 in a pack for £2.03 or 6 in a pack for £5.10. Im not sure how big they are tho, but i need ur feedback on what to do. The minimum order price for the site is £5 so need to know soon so I can get shopping and i don't wanna waste money on something that is pointless :) Please get back to me- ill write this on the facebook group too!