Number of collections:          5
Number of items per collection: 8
Number of items required:       10

artist:   5*8*10   = 400 iterations
jhourcle: 5*(8+10) =  90 iterations

##</code><code>##

Number of collections:          5  (Conservative guess.)
Number of items per collection: 12 (Middle of provided "5 to 30".)
Number of items required:       6  (Provided.)

artist:   5*12*6   = 360 iterations
jhourcle: 5*(12+6) =  90 iterations