I am happy to combine postage for multiple items if it saves you money.  Just ask for a postage quote if you are not sure.

Thin items are usually sent at letter rate where possible for the cheapest postage.  

My postage is at cost plus a few cents for packing or envelopes. 

IN AUSTRALIA:  500g satchel with tracking:  $7.50;  3kg satchels with tracking:   $12.00.   I also use the new 15 kg Australia Post flat rate boxes through click and send which are a great saving for multiple items.  

IN AUSTRALIA:   Buy as many books as you like - combined postage for books is capped at $15.00 - does not apply to bulk lots - ask for a quote first if buying bulk lots or if you are not sure.    This offer is limited to the books fitting into a B4 box - AUSTRALIA ONLY.