Great Idea Russ , I've had the same problem , I recently sold my first LP (never again) I got £1.99 for what I thought was a £30-£40 Lp and charged £3.30 P&P but it actually cost me £5.50 , do the Maths ( I know it's Math but doesn't sound right lol) . I don't want to rip anyone off but want to get my costs back. I buy mailers , nick some weaved tape that would hold an angry Rhino and use proper stiffeners which all cost me money and I charge £1.90 for 45's UK , which I think is reasonable ?
Good Idea mate
Swifty