How much do i sell my expensive baby clothes for and where?

[GlamGiraffe]

I live in london and have a lot of very expensive baby clothes companies like jacadi And Rachel Riley (where dresses are about £60) and a lotof similar clothes from Spain, all very specific in style. Then I have labels attached ralph lauren and loads of babygros a lot of which were only worn once, mostly John Lewis some next and assorted other brands as well as other stuff. I want to do an NCT or other sale and wonder if anyone could suggest the best London one for my type of stuff and where on earth to start with pricing? All my items are immaculate, many worn one or two times only. I wouldn't sell them if they had anything wrong at all.
Any suggestions?
Online is not for me.

If you have a local store who specialises In Spanish clothing etc. You may find they are willing to buy good quality second hand clothes of you. I know one in my area does this, as she have a small second hand section.
Alternatively specific Facebook groups for the branded clothing you have. So you'll probably find some specifically for Spanish clothing/designers etc. Some will be local, others will require posting stuff.
Alternatively eBay. You may have stuff up for a few weeks until you find a buyer who will pay the prices you want.
NCT will be similar to book sales. People will expect a bargain. Good for toys and other baby bits.