I'm wondering what is TRS?   BTW how can I quote here?

After you click reply on the post you want to quote, click the " symbol in the series of icons on the top of the box. 

TRS stands for Top Rated Seller. I can't guarantee it, obviously, but the way I took eBay's announcment about changes to the TRS program, you won't lose it if you don't offer express etc, but for sellers that do qualify for Top Rated status, listings that comply with their "Best Listing Practices" get an additional boost in best match (so, free post, 14+ day money back return policy, 0-1 day handling time).

Just in regard to express, when buyers have requested it I've used my standard packaging and and just paid for the express service at the PO. It's probably going up on the 22nd, but it was $9.55 last time I used it and you have to fill in a form with the recipient's name and address that's stamped by the PO etc.  The staff have queried why I didn't just use a satchel, but as the package was under 500gm and I barely used more packaging (in terms of expense) than I would have if I used a satchel, I just found it easier. 

Anything can be modified with the right know-how - if I were unscrupulous - and any of my buyers actually had to open a PP claim - I could dishonestly defend against it as easy as I'm typing this post. 😮 :8}

And no, of course I won't say how!