Deer can do a lot of damage, you need to check behind the bumper asap for hidden damage, radiator etc
Bumper cover, bumper beam, grills, lights etc painting and fitting, and possibly specialist charges if the AC condenser is damaged, and VAT could easily put costs well over 1k, and getting on for 2!
If your excess is a few hundred quid, and you have protected NCB, then I would advise making a claim. that way, any unforeseen nasties are taken care of properly, without hassle
Thom