The Flip World Add-On retails for US$9.99 (S$14) and it consist of a US/AU Plug add-on and an EU Plug add-on.
After a successful launch of the Flip British Plug on Kickstarter, Oneadaptr announced the Flip World product range in November 2017. They offered a 30% discount for those who pre-order those products with the coupon code, WorldIn18.
Flip World product range has four products under it:
According to Hardware Zone there are two models, PLM01ZM and PLM03ZM.
I bought it for CN¥89 (S$19) (excluding shipping) at ZMI official online store in T-mall during their 12/12 sale. The usual price is CN¥99 (S$21).
Bought the Torras Wireless Charger from Tmall for CN¥133 (S$28).
Torras Wireless Charger can output 10W of power which is capable of wireless fast charging. But sadly, this will not fast charge the iPhone 8/8 Plus/X as Apple has purposely limit wireless fast charging to only Apple-certified wireless chargers.
Both sites shipped directly to Singapore. Satechi will ship to Singapore via USPS Commercial ePacket for US$12 (S$16) while Amazon will ship via Aramex for US$4.55 (S$6).
Mophie Wireless Charging Base is one of two Apple endorsed wireless chargers that can fast charge your iPhone 8/8 Plus/X at 7.5W.
Having benchmark third-party aka non-Apple endorsed wireless chargers, I can confirm that those does not fast charge your iPhones at 7.5W.
The original retail price was US$25.99 (S$35), but they have an exclusive discount with Kinja Deals using the coupon code KINJA593. That coupon code gives you US$6.50 discount, making the final price to be US$19.49.
The project which started on Kickstarter on 26th June 2017 has raised a total of US$217,053 out of their initial goal of US$30,000 from 4,887 backers.
Its usual retail price is US$26.99 (S$38) but because of an ongoing promotion, you can use the promo code, GEYC7LFE, and it will give you a discount of US$6.50.