I will happily combine/adjust postage on multiple purchases - please ask, or wait, for an invoice.
To combine/adjust postage on 'buy-it-now' items without free postage, place items in the basket, then request invoice before paying.
If you pay before receiving an invoice from me it can be difficult to refund part postage as charges will have been raised by, and paid to, eBay as soon as the sale is confirmed.
Standard Royal Mail Second Class mail covers value to £20.
Items which exceed £20 value may attract a higher postage charge. Please ask before bidding/buying or wait for an invoice before paying. Postage on listings started at a higher figure has usually been set accordingly.