I am actually in the motor trade myself
Oops.

No offence intended. It just seems these days that if you want a job done properly.....
I'm not trying to have a dig at anybody , but merely trying to alert people to what I think are the pitfalls associated with element filters.
Whilst I can see the environmental advantages, it's just that in 30 years in the motor trade I haven't seen too many problems with canister filters , but since the re-introduction of element ones , I've seen a worrying increase.
I wonder how much of this is due to lack of familiarity leading to incorrect fitting rather than basic flaws in the design? Not that you can really go wrong fitting one. :-/
In addition, many canister filters are not very well made internally, IMHO, it's just that what's out of sight is out of mind...
I must admit I've had no problems with mine but it gets changed regularly and correctly torqued, so doesn't have the chance to sieze / corrode. I guess if following VX's 20K service intervals it might be a different story.
Maybe it's the extended service intervals these days that's contributed to the perceived increase in problems. An engine's probably going to survive 20k oil changes when it's new, but rack up a few miles, miss a few services, use nasty oil and maybe the filter will clog, causing it to collapse.
I suppose the price differential is probably down to the fact that huge numbers of canister filters get made, one size fits a wide range of vehicles and they are probably farmed out to 3rd party suppliers rather than being relatively rare and supplied by the OEM themselves.
Kevin