Any one can recommend a cheaper Omni antenna similar to amo-2g10 for RB912UAG?

I’ve checked MikroTik’s recommened antenna supplier Lanbowan, and their 2.4ghz 11dbi omni antenna is just too much for its size.


Then I saw UBNT’s AMO-2g10, and pairing the RB912 with a stationBox seems like a great setup. However amo-2g10 is a bit on the expensive side. Do you guys have any other suggestion that combines both the price range of Lanbowan and specifications of AMO-2g10?