SPAR - ROBERTSONS WINE

This comp;aint is not specific to my local Spar, but apparently to the whole Group. It has to do with the pricing of a 1 litre of Robertsons Dry Red wine in a Box. Approximately 4 weeks ago this box cost R39,99.... Good value Mid March 2022 it went up to R44,99...... not bad value Today..........R 54,99................ not buying it nay more How can a single item increase in cost by so much over a very short period of time. I can only presume that the Supplier is being greedy, because it's a very popular and good wine. Please ask them to adjust the pricing or I will have to buy something of better value. Thank you

BRM