I feel like this suggestion belongs more in items, it is about the berries. going to move it to that subforum :)
The reason I haven't added the gender berry to the Millionaire Center is because it restocks in the Food Market. You could potentially restock it for like 50k. I've put it in the Token Shop a few times when it gets to be too high, but in general it's cheaper than the genderless berry because it actually restocks in normal shops (and isn't that high of a rarity). The genderless berry never restocked in the same way, it was a BHH exclusive item.