It's just up the road from my mother-in-laws so I'm in the area a lot...would be great to go to with the kiddies but I'm not sure I would stump up a fiver for the privelege - but it would get me into the shop more so would be more likely to buy bits whilst I was there.
There's also a steam engine museum in Leiston but the £5 charge for that has always put moe off visiting - might be rubbish and I bet they wouldn't give me a refund!