Native speaker
In Emirati Arabic, “How much?” is بكم؟ (ibkam?).
بكم؟
How much?
DLI writes ibkam; the CO spells the same word with ch (cham), the Emirati č.
It's in the phrasebook under Numbers, prices & money, with 36 more like it.
Source: DLIFLC Emirati Basic Language Survival Kit (2007). Credits and licences