Payment to be made no later than 7 days after purchase. I use AUSTRALIA POST PARCEL SATCHELS to send out items. Smaller satchel holds up to 500gm for $7.70 (generally 1 to 2 books depending on size). Larger satchel holds up to 3kg for $12.40 (generally 3 to 10 books depending on size). Extra Large satchel holds up to 5kg for $17.75 (generally up to 20 books depending on size). If you are unsure please contact me and I can confirm which satchel is required for your purchase. I will contact you when payment has been received and advise that items are in the mail (usually same day as payment confirmation, but no later than the following day). PLEASE NOTE: I CANNOT be held responsible for items during transit and therefore I am more than happy to arrange for your items to be mailed: ** FOR REGULAR POST SATCHELS ONLY** I can mail items SIGNATURE ON DELIVERY for which Australia Post charges an additional fee of $2.95 **FOR ALL OTHER STANDARD MAIL ** I can mail items REGISTERED MAIL for which Australia Post charges an additional fee of $4.00. I can also arrange for your items to be sent EXPRESS POST: 500gm Satchel $11.35; 3kg Satchel $16.40 and 5kg Satchel $24.95. All books mailed in SATCHELS are bubble wrapped for protection during transit.