Gardenshop Bryanston ridiculous pricing.

The pricing of goods at this nursery is way out of kilter. I have lived in the area for many years and stopped visiting this outlet because of price. I called recently to get a price on a bulk pack of suit blocks (for garden birds). It turns out that their price per suit block is R55. The average price around town per suit in a bulk pack is R30! Pricing of other goods in the shop is along the same lines. Why would one support such a business?