I compared UPS, DHL and Fedex, found fedex will cheaper than others.
119usd for 4pcs to Thailand, that means 29usd/pcs.
If ship 2pcs is 79usd , that means 39usd/pcs.
As Express company will make a discount for more heavy goods.
I already made a PI of two, kindly please check.
May I know which scheme will you choice ?