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Damn, is the action ok at least? That should be worth throwing a new stock on if so.
It barely matters, the rule is that if you can't drop-kick your parcel down and the road twice it will get broken in transit. Good or bad experiences also depend on where you are as volume handled and final delivery drivers have an impact on how much each cares about your parcel.
If you're shipping something fragile like that, wrap the item in bubble wrap then sandwhich between boards of cheap board like ply or OSB. Fold corrugated card board around the open sides, bonus points if you can get proper cardboard angles, and fixate it all with generous amounts of palette wrap. Then wrap in packing paper etc. That'll get you through most systems, you'll just have to accept it's going to cost £5-£15 for packing materials not including effort. Tough to expect that for one-off sellers as well, sadly.
The good services have distinct delivery v.s. courier options, delivery is cheap-and-cheerful every day parcels while courier means dedicated pick-up and guaranteed delivery slots. It should be no surprise that the latter is orders of magnitude more expensive than the former (usually not worth it for items under £1000) but its the difference between a harried parcels-per-hour guy desperately trying to meet quota and a slightly less harried guy who's graded on timeliness and service not just quantity.
All that said, I've had generally good experiences with DPD, FedEx, Royal Mail, and UPS. Provided whoever did the shipping didn't pick their budget options.