i wonder if our existing miner software will be compatible.

How much would I need to spend on a set up to make me 50 - 100 XMR per day? Money is no option but will it pay itself off?

Anyone here interested in all expenses paid flight food hotel to help set one up in near future? + set up fee

Okay, so at current network hashrate, thats almost 178 Kh/s to earn 100 XMR per day, 89 Kh/s to earn 50 XMR per day.

Common specs for current hardware out there is

750 ti = 250 h/s, 33 watts ... one model gets 280 h/s (the PNY overclocked one)
290x = 780 h/s, somewhere around 230 watts

No idea what the new cards will do.

assuming you want efficiency, we'll use the 750 ti. So thats 89,000 280 = thats 318 cards. They go for 100$ each, so thats $32,000 in cards alone. Then for every 6 cards you need a motherboard, CPU, ram, HD, PUS, so thats 53 computers * 200$ = $10,600. So we're up to $42,600, assuming these prices would work.

You still want to earn a minimum of 50 xmr per day?

Those are all factors that you would have best gauge for yourself, based off both known and unknown variables, much like any kind of mining:   The future price of XMR, the power costs you will consume, the shrinking block rewards, the choice of cards you make, the software you run, how you plan to cool the room etc etc etc... Now you see how complicated the question really is.  

Edit - I somehow missed Gingerale's reply, sorry - Very good, and is exactly why I would never even attempt this, I only mine for fun tbh.

Emissions steadily declines and one year from now it will be 60% of what it is now.  Each 2 minute block is approximately 11.7 Monero now vs 6 in 12 months.

The GPUs will probably last a long time and still have value, as in many years. If there is no profitable GPU mining to do (XMR or otherwise), you can sell them off on eBay to people building or upgrading PCs still recoup some value even years later. I had some GPU miners running on and off for 3 years and when I sold some, I still got back most of what I had paid for them (low promotional prices with rebates and such for the most part). I got lucky and had no fan failures (or other failures) over a few dozen GPUs but others have had worse experience, so you may need to factor in some budget for replacing fans and failed cards. I think it is kind of hit or miss on the quality you get when you buy them.

If you are buying hundreds of GPUs the economics may be somewhat different.

It may still be more profitable to mine ETH (or something else?) and trade it for XMR. I haven't looked at the numbers recently.

Thanks for the information everyone. Couple more questions...

1. How many XMR are in circulation?

2. How many XMR are created per month?

3. Will there be an android wallet and windows wallet?

What is the best method (Ok, that is very subjective. Let's say "what are some of the tried and trusted methods") to buying Monero with fiat in Europe?
Send Euros to Kraken and exchange to Bitcoin, withdraw btc to Poloniex and exchange to Monero? Any more straightforward method that's safe?

How is this safe? If I don't see the Monero will Paypal refund me?
Besides, do we really recommend paying Paypal their high fees?

i gave you the general guideline. you have to check details by yourself.