Half off is good.
The cost of the 6 gal (3 batches) I made using Cooper's Dark Ale can will be $18 + maybe another $16 for assorted DME, LME and hop adds. (which I did not get on sale and all are small quantity buys) So that is another way to go if you are making larger batches and can get them on sale. Even cheaper if you buy bulk on add ingredients.
Of course, I did not taste it yet, but it was probably made in the same plant as Mr B HMEs so will be fine.