So! I know a lot of people have difficulties knowing which spike is worth what. So I've decided to come up with a rares guide. The den beta amount is ESTIMATED, take this with a grain of salt!
Black Long Collar: 3 good longs OR 40 - 60 den betas
Red Long Collar: 2 bad longs and add OR 25 den betas
Purple Long Collar: 2 bad longs OR 20 den betas
Blue Long Collar: 2 bad longs(?) OR 18 den betas
--gap--
Yellow Long Collar: 4 shorts(need color)(?) OR 15 den betas
Pink Long Collar: 3 - 4 shorts(need color)(?) OR 13 - 15 den betas
Green Long Collar: 3 - 4 shorts(need color)(?) OR 12 den betas
Orange Long Collar: 3 shorts (need color)(?) OR 10 den betas
--gap--
Black Short Collar: Green/pink long (needs confirmation) OR 10-12 den betas (needs confirmation
Red Short Collar: 2 - 3 long wristbands OR 8 den betas
Purple Short Collar: 2 - 3 long wristbands OR 8 den betas
Blue Short Collar: 2 - 3 long wristbands OR 8 den betas
Yellow Short Collar: 2 long wristbands OR 8 den betas
Green Short Collar: 2 long wristbands OR 8 den betas
Pink Short Collar: 2 long wristbands OR 6 - 8 den betas
Orange Short Collar: 2 long wristbands OR 6 - 8 den betas
--gap--
Black Long Wristband: Bad short OR 6 - 8 den betas
Red Long Wristband: 2 short wristbands OR 4 den betas
Purple Long Wristband: 2 short wristbands OR 4 den betas
Blue Long Wristband: 2 short wristbands OR 4 den betas
Yellow Long Wristband: 2 short wristbands OR 4 den betas
Green Long Wristband: 2 short wristbands OR 4 den betas
Orange Long Wristband: 2 short wristbands OR 4 den betas
--gap--
Black Short Wristband: Long wristband OR 3 - 4 den betas
Red Short Wristband: 3 - 4 den betas
Purple Short Wristband: 3 - 4 den betas
Blue Short Wristband: 3 - 4 den betas
Yellow Short Wristband: 2 - 3 den betas
Green Short Wristband: 2 - 3 den betas
Pink Short Wristband: 2 den betas
Orange Short Wristband: 2 den betas
Credit so far to TigerMint & MexicanGrizzlyBear (need AJ usernames)