Retail / Wholesale Price - Please help!

[Wolf]

This is a dummy question and it might sound stupid, but since I am not South African and have no experience in the retail market I REALLY need your help.

MSRP of my product: R174,56 + VAT = R199
Wholesale price: R117 + VAT = 133,38

Huge suppliers like UPD get 15-20% discount on the wholesale price depending on the quantity.

My question: Is the wholesale price of 117 + VAT acceptable? Too high? Too low?

Is R57,56 profit / 49,20% Markup / 32,98% Gross Margine acceptable for a retailer?

Please help me out. I have no clue how retailers calculate.

Thanks