Buyer complains about postage price

[SueDonim]

Yes, some people can be very petty. I have noticed though that using the TM courier system costs more than just going to the preferred courier directly. I think the important thing is to always have the price on the auction so that it then becomes part of the contract and they buyer has no grounds for messing the seller around. As a buyer, I'm always a bit reluctant to bid on something where the freight has been left open as it leaves me wide open to whatever add-ons they might do. One I did buy recently was a memory foam item that the seller didn't even consider could be rolled up into a relatively small parcel for less than half the price of sending it full size.

That's interesting to hear, ive always found the opposite for me, the trademe system quotes me better prices than nzpost, in fact I round up the cost to reflect what NZpost quotes me because I always take packing info factor
 A roll of the stuff is like $30.
The biggest issue for me is I never quote shipping costs because I have no idea what it will cost until packed and enter dimensions, etc.

I just made up a dummy example to see if maybe things have changed. For a small parcel TM quoted Aramex the cheapest locally ($6.45 v. NZPost $6.80) but I wouldn't use Aramex anyway. For the rest of the options NZP was $4.80-$9.80 for both islands and TM was $10.17 same island v. $11.43 other island. The $4.80 NZP option doesn't include pickup but the others do. This was just one sample. It might be different for bigger sizes - I know that a NI v. SI differential applies to bigger parcels but I've still found NZP direct to be cheaper than TM in the past.

Maybe you get a TM discount if you are In Trade.

When I'm listing something I always find the box/bag/other packing I intend to use and work out the freight costs first so that I can put in on the auction. That costs time, but no more time than doing it later would take, assuming that I'm going to get a sale. High volume sellers would know how much each size of box costs to send so I'm sure it works better for them to put the information on the auction at the start.