That is still blatant p!"" taking, irrespective of anything else.
In the UK, Royal mail goes by weight and size. Different brackets of cost for different classes of post (1st/2nd/recorded/silver, silver being the best coverage and fastest method). Basically, the faster you want it there, the more you pay.
I paid less than £5 to send a set of three M5 taps to a friend on next day delivery, recently too (last 3 weeks).
We also have Parcel Farce Parcel Force, as well as other courier/carrier options and all have decent shipping costs on larger/bulkier parcels as well as smaller items.
$19.50c for a 1/4" end mill? thats £15.45GBP. Absolute pee taking robbery.
I can understand high international costs for shipping and I call that fair. $110 from US to UK expedited shipping was a recent thing for me and I did not even blink at it.