custom postage

[blackbuck2010]

I am trying to apply custom postage to an item valued under £10, and to be sent letter post under 100grams but can not get anything except simple delivery.   I can see from other peoples listings that they have managed it.  HOW,  please help

[**peaseblossom**]

The advice on here should also work if adapted for letter items:
https://community.ebay.co.uk/t5/Seller-Central/How-do-you-list-anything-bigger-than-61cm-Part-two/m-...

But also not all sub-categories are eligible.   In FAQs on here:
https://www.ebay.co.uk/sellercentre/postage/simple-delivery?targetgroup=C2C
click on "Which listings aren't required to use Simple Delivery?"

@blackbuck2010