New Ripcurl STL boardies...

Hey, has anyone tried or bought the new stichless boardies by Rip Curl? I bought myself a pair when I was over in Oz in january and I'd have to say that they do actually make a difference. No harsh chaffage! Anyone else had any pleasant experiences with these amazing shorts??!?!?
Are there any cheaper solutions to get rid of chaffage??? cos the STLs were dead cheap out in oz but here they're real expensive - £50!! which i think is a lil too expensive even tho they are revloutionary technology!
Are there any cheaper solutions to get rid of chaffage??? cos the STLs were dead cheap out in oz but here they're real expensive - £50!! which i think is a lil too expensive even tho they are revloutionary technology!