I bought the bar itself for around £3,500. I then loaded 1BTC into it. So typically, I'm looking to either break even or make a little profit on it. But from looking at your offer, it seems too much for you - haha.

Yeah I know, it's hard to believe. It's a collectors item so hopefully it has more value later on.
Oh boy, didn't you do any research at all? Or did you thought this was 99.99% gold bar?
That
would have been about the right price if it was... The bar weighs 118g which is about $5k in gold today.
Na, I knew it wasn't 99.99% gold. I just thought it would be a lot more rare which would result in the value going up in the future - guess not.
That 1 Bitcoin you loaded into it could well be worth more than you paid for the bar in £ someday soon. Buy some more
BTC and load it up and use it for what it was made for... a savings bar!!!