Is there a place to shop cheaper digital download key for eShop?

I mean you can buy download codes then download the game in the eShop. Do you know some webshops that make better deal than eShop prices? If possible for EU eShop games (damn region code). Also is there a way to list eShop titles and prices, in order not to miss a promotion even when not going to check every week on the eShop or even to know the prices if you don't own a 3DS (yet)?

Anne of green gables pbs new. Anne of Green Gables. A new adaptation of Lucy Maud Montgomery’s classic novel tells the story of Anne Shirley.

EDIT: what we have found so far

For EU eShop:

GAME UK Prices in £, good choice but not the best prices

CDKeys Prices in € or $ or £ ?. A little less choice of games but slighlty better prices. Sell also top up cards but they are in £ only, if you add on to the basket a warning sign indicate it will only work in UK, when I add different games to the basket it tells me sometimes that it's only for UK and sometimes only for Europe. (I've asked Nintendo if top up card are linked to the currency of your eShop or if the system convert the money into your currency. Not sure if the will answer it).

Games Rocket Prices in €, good choice, price in between GAME and CDKeys.

For NA eShop:

GameStop Prices in $. Sells digital download at the same price as boxed version. Legend of tarzan full movie.

• Pokémon Crystal Edition 3DS - Download Code

  2018Nintendo 3DS

  by Nintendo

  Platforms	Price	New/Used
  4 out of 5 stars1	-
  £9.99	£7.40

• Pokémon Yellow [3DS Download Code]

  2016Nintendo 3DS

  by Nintendo

  Platforms	Price	New/Used
  5 out of 5 stars6	-
  -	£14.96

• Pokémon Red Game Boy [3DS Download Code]

  2016Nintendo 3DS

  by Nintendo

  Platforms	Price	New/Used
  3.7 out of 5 stars5	-
  -	£14.95

• Pokémon Ultra Sun [3DS Download Code]

  2017Nintendo 3DS

  by Nintendo

  Platforms	Price	New/Used
  -
  Only 9 left	£29.02	£25.94

• Mario Kart 7 [3DS Download Code]

  2014Nintendo 3DS

  by Nintendo

  Platforms	Price	New/Used
  5 out of 5 stars2	-
  £31.99	£12.28

• Fire Emblem Fates: Revelation DLC [3DS Download Code]

  2016Nintendo 3DS

  by Nintendo

• Pokémon Blue Game Boy [3DS Download Code]

  2016Nintendo 3DS

  by Nintendo

  Platforms	Price	New/Used
  3 out of 5 stars2	-
  -	£14.96

• Nintendo Selects Nintendogs + Cats: Golden Retriever & New Friends [3DS Download Code]

  2013Nintendo 3DS

  by Nintendo

• Pokémon Silver Version 3DS - Download Code

  2017Nintendo 3DS

  by Nintendo

  Platforms	Price	New/Used
  -
  4.3 out of 5 stars10	£8.04

• Layton's Mystery Journey: Katrielle and the Millionaires' Conspiracy 3DS - Download Code

  2017Nintendo 3DS

  by Nintendo

  Platforms	Price	New/Used
  -
  4.4 out of 5 stars73	£18.57

• Pokémon Gold Version 3DS - Download Code

  2017Nintendo 3DS

  by Nintendo

  Platforms	Price	New/Used
  -
  4.4 out of 5 stars13	£8.27

• Nintendo Selects The Legend of Zelda: Ocarina of Time 3D [3DS Download Code]

  2012Nintendo 3DS

  by Nintendo

  Platforms	Price	New/Used
  -
  Only 2 left	£37.02	£8.00