Hi I went to cala D'or in may. Plenty of shops and nappies but more than double price of home. Captive Market! Take baby stuff with you and buy your lotions and potions out there instead Have you got steriliser bags for bottles? boots swim nappies much cheaper but 3 months is tiny so buy smallest they have Xs if poss.
Not sure if this is correct but I was told that the Dodot brand that you see all over Spain was made by Pampers. I think the last time I was in Majorca I saw Pampers in the shops as well, but I always found the Dodot nappies fine. Agree with MayDayChild about the price - formula is incredibly expensive out there.
I have visited Mallorca several times with my kids, I would recommend buying your nappies here in the UK. Believe it or not, right now the UK is cheaper for these items than most places in Europe. I know Sinisbury and Boots usually have good discounts if you buy more than 1 package.