hay man.. a 50 is usualy bout 3.0 , a quart is 7.1 for 90 or 100 , 14.2 for 150 , and a 28.4 gram oz for 250-300 depending on quality.
there usual irish prices but thats still rediculously high for the quality on offer.
am also quite intereseted in what you have to offer so if ye wanna send me a msg do.