U shouldn't pay that much (20$/g) unless it's one-hit shit or something covered in mostly white or red hairs! Regular dro should be like 50 for 1/8th or 100 for 1/4 .. So u get 1/8th and an extra 1.5g and pay what you should for a quarter? (90-100)
Just eye-ball it before u get ripped, or you might consider it a good deal if you reeeeely want that dro.