I shipped 3x Steelseries 6Gv2 for USD$42 from USA to Singapore through DHL.
U might want to check again???
Probably be USD$30 each individually...
forget to add insured.
My GF always ship me stuff all the way from Singapore to US.
$70~80 SGD insured. package weight around like a filco keyboard
package as big as Steelseries box.
Postal services are different in USPS, and SingPOS.
unless both are from UPS.
i would still ask walrus to get another direct freight to US instead of ship to SG then to US. which will cost a lot more.