The labours of Hercules, Gibraltar £2 coins valuation

Hi everyone, I am just curious as to what people think these six coins are worth, They are all in uncirculated condition, Thanks.

I got the stymphalian birds in my change last week. couldnt believe it. They sell for £50 to £80 each on ebay.

The full serie:
http://www.delcampe.net/page/item/id,68162597,var,BIMETAL-2-POUND-THE-TWELVE-LABOURS-OF-HERCULES-PERFECT-UNC-GIBRALTAR,language,E.html

That was 5 years ago so price may not reflect current market value.

Thanks for the comments, I have paid £400 in total and am still looking for the rest of the set, I saw a set on ebay for £1500 that sold quite quickly, There is another set on ebay for £3500 but that has been relisted several times.