Here's the deal for the Leadlight Gamma + Bandcamp Soundtrack sale:
* You get 75% off text-adventure-horror-CRPG Leadlight Gamma
* You get a free coupon for the soundtrack on Bandcamp
So you get both for US$1.67. That's a $10 saving or 85% off.
(Regular minimum cost of the game (US$6.66) plus the Bandcamp soundtrack (US$5) = $11.66)
This deal will be live for the duration of itch.io's June 20-27 2018 sale week.
PS - The purchased game is downloadable immediately, however the soundtrack coupons are processed manually, so you will receive your coupon by email within 48 hours of your purchase.