Don't know about this particular breed, however I do have two small pure-breeds of around the same size. The risk with most pure-breed's is their Immune systems, for example, King Charles are prone to cancerous growths later in life, and Maltese are know for having to be kept on a strict diet - so no scraps from the table for my two!
My first bit of advice is to do a ring around to Vet's that you can get recommendations for, and enquire if they have experience with Pug's as a breed. You would be surprised how many will say No, as I was. I've been fortunate to find an incredible vet for my two who knows the breed inside out, and is just as besotted with my two as I am. I would trust him with my babies, and for me thats a big thing - when it comes to them I'm fiercely protective. Yes, I'm one of those animal owners who thinks of their dogs as kids! If you're in the Cork area PM me and I can provide my recommendation for you to call and get some advice.
Second bit of advice is to go to your local library, see what books you can find on Pugs, and read read read! Its great that you're already doing your research on the breed and you'll be surprised by what you find out. I'm also sure there are forums for animal lovers and there'll no doubt be some online information you can find.
Thirdly, watch their diet - and be careful of the quality of the food. When it comes to dog food, you need to pay for the quality. Fortunately with small dogs they don't eat much and so even though it costs a little more, its still cheaper than what you'd pay for a big dog. And I promise you this - look after their health and you'll save on Vet fee's over the years. You'll need to choose a good solid brand of dog food so as not to cause tummy upset, especially as a pup before he/she is housetrained. The last thing you want to be doing is cleaning up diarrhea and vomit from your floors!
In terms of Vet fees, if you are fortunate to have a well-bred pup they will be the same as other dogs. Yearly vaccinations, Kennel cough (even if you never put them in kennels, get this - they can pick it up from anywhere) usually comes to about 100 euro mark. Definitely micro-chip the pup if its not already done before you take them home - this is about 25-40 depending on different places. Each Vet visit can vary, so its hard to know. But the annual stuff isn't too much.
I would also recommend getting pet insurance for the pup, given that its a pure-breed, and likely to have some issues at any stage throughout their life span. Allianz do great pet insurance cover for my two, but do a ring around for some good deals. And be sure they are insured in the first few years as if not, you can't insure them in later life when the Vet visits become more frequent (I think around 7 years is the cut off if you haven't insured them before that, but this might have changed).
Lastly, and this is the biggest thing - please ensure you know the commitement you're taking on. I know we hear it all the time that a dog is for life, but its easy to say it and harder to live it. I love my two and would never ever give them up, but there are somw odd times where I do think things would be easier if we didnt have the responsibility - I mean in terms of our freedom. Anytime we want to go away for a night, we need to find a sitter or book the kennels, which is about 12-15 euros a day. Not too much for the odd day, but go on a holiday and it all adds up. And I have two! Even little things like going out with friends for a full day - your mind is constantly brought back to "are they ok, have they destroyed the place, I better get home". It is like having kids at times, especially smaller breeds as they are mostly indoor dogs. A dog ties you down and you need to have stability - dogs like routine and get upset at changes.
They'll bring a lot of happiness to your household if the commitment is there, I can promise you that
