Spot on Chris.they do look great bits of kit.but like you say it's the quality of the knock offs that are going to be a worry.
On eBay they are about £110 delivered to the UK.
But like you say they will last a lifetime if looked after.
The wife has a cast Welsh cake round griddle plate from her gran thats some age.but an oiling after use its like new.
Just seen this pan lodge sell.
Looks a smart pan couldn't think of anything better to cook a trout on while camping.