Retired Lego Sets - Where to sell?

smithyjg

Hi, I am new here and have a number of retired UK lego sets for sale.
All complete and boxed - some of the boxes are creased but all are complete - all parts counted and checked by myself personally
.
The sets are - 
31039 - 3in1 Blue Jet
31024 - 3in1 Red Car
31023 - 3in1 Helicopter
42036 - Technic Motorbike
42032 - Technic Digger
42033 - Technic Bullet Car
42048 Technic Race Kart

Can anyone tell me what they are worth and how best to sell them please?
They are from my sons collection but he no longer needs them.
Thank you for your help and advice

CCC

You can check what they have sold for on bricklink.  They all look like £6-£8 sets for used. Ebay is probably the best place to sell them, grouped into a technic lot and a 3in1 lot. 

CCC

I just looked at the list again, Blue Jet and Motorbike are worth a little more than those smaller ones.

I'd start them on ebay at a price you / your son are comfortable with getting and see if they go any higher.

smithyjg

Thank you for your  advice