JB HI-FI anti-competitive sales tactic?

So, I just visited a JBHIFI store because they had a mobile phone I wanted. They had it in "Awesome Lavender". which was listed as $50 cheaper. Not really fussed on colour so went into store to buy it. Sales guy tells me "sorry, all out of stock with that colour". So now I buy the same phone in black for $50 more which I could of got from any number of other retail stores for the same price. When I got home I checked the JBHIFI website and sure enough - Awesome Lavender is still in stock at the store I just purchased from. 🤔