Greetings Cheryl...
> What is the price of a property rental in Bulgaria? What about buying a property?
This is enormously variable depending on size/location/type of property. In Plovdiv, apartments to buy are now approximately 1,000 euros/m2, and more expensive (I guess 1200-1300 euros/m2) in the capital Sofia. This is still great compared with many EU countries, but Bulgaria is not "cheap as chips" as it was a few years ago. :-)
> How much does petrol cost or how much does it cost to use the various public transport services?
Just under 2 lev/liter. Public transport is cheap, my local village bus (Kazanlak-Dolno, 15 minutes) is 0.50 leva, and minibus Kazanlak-Plovdiv (couple of hours) is 10 leva, I think.
> How much do you spend on average on your weekly groceries in Bulgaria?
I spent 240 leva this week for a big weekly shop. But that had wine and several meats.
> What is the price of your health insurance? How much does seeing a general practitioner or specialist cost?
I have a Health Insurance for Foreigners policy which is about 80 euros. This is not a proper health insurance policy, which would be maybe 300 euros. (But that's quite cheap, an equivalent policy in Spain cost me 1,000 euros.)
I didn't get the medical policy as I have registered as an unemployed person for social security payments, that's 25 leva/month. This means I'm in the system for free healthcare, and I got a Bulgarian EHIC card recently which I can use in other EU countries.
I've made an appointment to see a (consulting) Doctor at the local private hospital in Plovdiv, and that's 25 leva/visit.
A couple of months ago, I had a bit of a worry about some medication I was taking, so I decided to go see a Doc at the same private hospital (Pulmed in Plovdiv, it's new and very nice). I decided to be lazy, and I just went to the Emergency Room! I got an Emergency Room Doctor Consult... plus blood pressure... plus EKG... plus ultrasound examination... plus blood panel. This would be, conservatively, thousands of dollars in the USA! They charged me 110 leva! :-)
> How much do you spend on your regular bills (water, electricity, mobile phone package, internet subscription etc.) on a monthly basis?
Utility bills are still very cheap. Water for the house was 150 leva for 2 years. I have fiber internet at the house with 50mbps and it's 20 leva/month. Electricity bill for the apartment in Plovdiv (was there few days only) for December was 10 leva! House electricity for December was 200 leva... which sounds a lot, but that was using 3 x AC units (it was -12 for a few days) to heat the house, and I ran them 24/7 all winter!
> What budget do you set aside for your leisure activities in Bulgaria? What is the price of a cinema or concert ticket? How much does a subscription to a gym cost?
With Covid, we just stayed in the countryside. We have been spending more on groceries... and I purchased a nice espresso machine (300 leva)... and I now have Netflix + Amazon + IPTV + VPN (geographic cloaking) so we haven't been out to eat, or see a movie, or gone to a cafe since last spring!