I have quite a lot of boy's clothes to sell

[Saltire]

About 4 t-shirts, and some jeans and a dressing gown,there's also 2 zip through cardigans, one which has been worn only twice, one not at all. plus some other bits. They are all pretty much the same sizes - 8/9 or 9/10. I was jsut going to list each one individually with a 99p starting price, but DH suggested listing them in bundels. I think my way might be better. Any advice?

Bundles woould prob be better. I saw one recently with 64 items in at over £50 with 2 days left :)

Good time to be selling due to change in season.

I would say sell individually and you could bundle the t-shirts if they're the same size.
I've just had a blitz on my DS and DD's baby and toddler clothes and listed everything with a starting price of 99p. I think about 4 things didn't sell, 2 went for 99p and the rest (about 35 items) sold for much more. One item, a boys dungaree set from Next went for £9!!
Next clothes seem to be very popular and boys jeans with pictures on are very popular. The 2 pairs i sold went for over £5 each. I kind of figured that if they went at 99p then that's 99p more than what i had before and you're not having to pay postage. You've just got to be prepared to package them up individually but if you buy the plastic postage bags then it's no hassle.

I would also recommend including bidders from the EU at the very least, most of my buyers were fgrom out of the uk and it saves you getting loads of messages asking if you would post outside of the UK.