It costs, at the minimum, $2.66 USD to send a small package of 4 OZ anywhere in the USA, and that's using a discount service .. In January, USPS plans on initiating Zone Pricing, so distance from Seller will begin to play in .. as well, Priority Rates will go up ..
Now, let's use a Cell Phone Skin as an example of China / Hong Kong shipping .. a low of .77 cents with free shipping to anywhere in the USA ..
https://www.ebay.com/sch/i.html?_from=R40&_sacat=0&LH_BIN=1&_nkw=cell+phone+skin&_sop=15
USPS going broke, much of it due to this antiquated shipping treaty, which China has taken advantage of ..
Kudos to this New Direction .. this can only help USA businesses and as a bonus, throw some money at USPS ..
Downside .. depending on how you look at it .. ?? With the continued escalation of shipping costs combined with On Line Sales Tax Collection, B&M's will suddenly become more attractive ..
Personally, I've never bought anything from Fastech / eBay China or their ilk .. I'd rather pay more and support an American Based Business ..