fwiw, Amazon UK and eBuyer.com have the linksys ea6350 (v3 = ipq4018) AC1200 router for £34 (37€) at the moment.
(eBuyer charge £4 for UK delivery)
update: only ea6350 v3 is ipq4018 as pointed out by @shifty. v3 has been available since Aug 2016 according to wikidevi - it seems unlikely Amazon UK would still be selling v1 or v2, but I suppose there is a chance ebuyer may be disposing of old inventory, but fwiw ebuyer did have similar offer almost 11 months ago. Amazon UK are out of stock but are accepting back orders.
update 29 July 2019: My ea6350 I ordered from Amazon UK for £34 finally turned up after 3 weeks. There is nothing on external LInksys packaging to indicate it is a 'v3'. Only the underside of the actual router is labelled 'ea6350v3'.
A quick google seems to suggest the earlier EA6350 v2 is supplied in a similar style box, but it has a darker blue colour scheme. The image of a smart app in top right corner is also slightly different. Here is a screen grab from December 2017 youtube video
Below is another EA6350 v2 in revised packaging which looks 'almost' the same as EA6360 v3 packaging, apart from the smart app image in top right corner of the box. Note the 3 icons for v2 smartapp image vs 2 icons for the v3.
Here is the new EA6350-4B based on Mediatek MT7621 SoC which went on sale in 2020 in the USA.
[https://wikidevi.com/wiki/Linksys_EA6350_v4]