It would cost me more to reprint and post the price list than we would gain Oz.
Don't you have a clause on your price list that states:
'Prices are subject to change without notice'
All of our price lists do over here, although I'm sure there are limitations to what the price 'change' can be.
Main limitation I have experienced is a price reduction.
This clause is generally from heating suppliers, which I suppose is reasonable due to exchange rates, shipping costs and greed of the distributors over here.