The regular retail prices are high; however, it's the omnipresent 40% off weekly coupon (which comes in Sunday papers or can be downloaded and printed off as many times as you wish from thier website) that make the purchases worthwhile.
Also, when they put things in the clearance aisle, the kits are normally half priced.
They do odd things like have a half dozen kits on the shelf at regular price and then a handful of the exact same kits sitting in the clearance aisle at half price.
At least one week a month they have a 30% off model sale. I do not believe I've ever bought a kit there at full retail price. I've always used the 40% coupon, 30% off sale or grabbed something from the clearance aisle.
Additionally, they carry airbrushes, compressors and other modeling supplies. The 40% off coupon can be used on those high ticket items making them quite a bargin.
Biggest, most expensive model kit I've ever bought there was that giant sized Revell Type VII U-boat using the coupon. It was a good deal with the coupon.