Here are some numbers. Even though they are from the slums (aka Recoleta), I hope they help.
Direct TV: $150 (just about everything)
Internet: $113 (fibertel)
Telephone: $25.00 (telecom...basic rate)
Taxes: 0 (bienes personal...cost of apartment less than $300,000, so no tax)
ABL: $600 (was $200 in 2006)
Water: $26
Gas: $20
Electricity: $40-$80 (I have three mini split ac units (frio/calor 3000 ea.), but usually only use one at a time).
Expensas(per m2) $600 per month for 70m2 (were 400 in 2006) No pool.
Other cost: Cartonjero service: free
How much would it approx. cost to buy furniture, Electronics for a 3 room appartement, upper class style. If some home-owners who could help me with that it would be really helpfull;; If you shop at a place like the BA Design Center you'll pay 15-30% more than if you go to the stores in the 6000 blocks of Av Cordova (and other "local" shopping areas). Even then, don't hesitate to ask for a discount from the quoted prices, especially if you are buying multiple items at the same time. The big appliance stores will usually discount 10% if you buy several large items. When I was buying my TV, a/c's, and washing machine, the salesman also told me to wait for the week-end when I would receive an additional 5% off when using AmEx. I estimate my expenses to furnish my 3 ambiente (one bedroom plus office) apartment (2006) at about $35000 pesos, including the 3 a/c units (installed), fridge, lavasecoropas, 42" flat screen TV, DVD player. Linens, curtains, area rugs (imported), kitchen items and wall decor added about $8000 pesos.
I did shop for "antique" furniture and my ceiling light fixtures in San Telmo and the mercado le las pulgadas. Only my futon and frame and queen size mattress and somier (box spring) were purchased new. I spent a fair amount of time "comparative" shopping and it paid off. For example, I found the same antique ceiling fixtures in two shops in San Telmo. One was priced at $3000 and the other was priced at $1000. I'm sure you can guess which one I bought (for $900).