Reason being the 3 years of CoVID with lockdowns, economical downturn because of the US sanctions plus companies relocation to counties as Vietnam and India.
The bigger reason is that China is too unstable. Companies go bust after a short time and while it is still cheaper than the West there is a lot of indirect cost involved in the way they do business nowadays. Even little things like the 25 day sailing time for sea freight, together with having to pay up front...
Only the biggest firms have the resources to move mfg to India or Vietnam. These need heavy on-location interaction and management because of a lack of setting up and yet another culture. India is even worse for making a fast buck than China.
10 years ago China was perhaps 1/4 the cost of the West. Today it is more like 1/2 and by the time you stack the "risk factors" into it... I used to make one product out there. After about the 4th time the company vanished (with mould tooling, test gear, the lot) I pulled it back to the UK. They went bang 2 weeks after the last £20k batch was loaded onto the ship! There was about another £2 cost, not insignificant on a £25 product, but I saved a sh1tload of money and worry.
Most companies are not stupid. They will act to protect their business, even if it takes years to make the moves.
Where is this Xian Yu site?
Between 2005 and 2015 eBay was the place for me to go when I needed a deal or something hard to come by. I sold tons of stuff on eBay, mostly computer and enterprise hardware and consumables.
You still can, and I still do. The biggest problem is that "junk" no longer sells. People need to do a nice description, nice photos, and then one attracts quality buyers, not the illiterate lot which makes up the bulk of "online society" these days.
It is true that Ebay has been turning itself into a new product market. It is however useful because you find different stuff on it compared to say Amazon. Just the other day I bought some specialised stainless steel bolts. No chance on amazon, and a big hassle+cost to buy conventionally. I've picked up some amazing bargains - a $5000 ARINC429 data acquisition card for $300, etc. I sell on Amazon too for my business but their terms are really sh1t. You need to have loads of margin because they take a 1/3 cut (on amazon fulfilled items), they are useless at comms (just a monkey call centre), it is pain and more pain all the way, they charge you extra for every different country you want to sell to, so they are OK for a narrow range of gear which is overpriced yet people are happy.
Ultimately both Ebay and Amazon sell mostly chinese crap.