Is this reasonable for combined p&p?

[SnackJack]

I have just sold two PC games to the same person (seperate auctions).

The postage was listed at £1.50 each. So would it be reasonable to send them together for a reduced rate of £2.50 or should I lower it further?

I'd be happy with that

I just weigh the things together then look up the postage on my chart from the post office, then charge that. So I lower it to what the actual postage is for the two items together, not an average of the two lots of postage or just a token reduction.

If the two items would go together for £1.50 then send them for that.

On the other hand as a buyer I'd probably be happy with the £ off but if I could see its actually cost less then I would put less stars in the feedback bit for postage charges.

I agree with flibberty here. weigh both items to get the actual cost then add on the bit for packaging and adjust the p&p that way.
It should cost you £1.45 first class so if you add 50p to cover packaging you can tell them you have deducted £1.05 for multi-purchases (they should be happy with that)