I have two switch's. One for Nintendo and one for me. My second one is rammed full of roms and I can't overstate how much I love it. It's getting more use as an emulation machine than the non hacked Switch, my PS4 and my XB1.
I basically managed to find the base unit for £80. I switch (

) my joycons between units depending on which I'm using and I switch (;D) units in the docks according to whether I want to play something on the TV or whether they just need charging.
Best of all worlds for me and I couldn't be happier.
I had to buy some extra's to get the modded unit up and running - a cable, a payload injector, a 128GB mem card etc. But the whole thing cost me about £120 in total.
Be aware though - you do need to get your head around it all. I'm still not quite sure what I'm doing but I'm VERY good at following instructions. I basically decided that I would take the £110 hit if it all went wrong and I bricked it. Having said that, if I break my Modded Switch now, I'd happily pay that to get another one up and running because I'm so in love with it.
And I say that as someone who was REALLY fucked off with Nintendo after getting burned buying a full price WiiU at launch and finding so little content on it.