To be honest the exact price of my electricity isn't $0.032/kWh, we have like consumption ranges with different prices, for example if I consume 2793 kWh in a trimester (we pay every 3 months), the price is calculated like this :
The first 125 kWh are for $0,01/kWh +
The second 125 kWh are for $0,024/kWh +
750 kWh are for $0,028/kWh +
The last remaining 1793 kWh are for $0,032/kWh
So basically if I would run one antminer S7, the electricity would cost me around $100/trimester.
I know that with a S9 it would be more profitable, but as it's my really first time in mining I want to try first with small hardware.
I've came across some listings on AliExpress especially this one
https://www.aliexpress.com/item/Bitcoin-Miner-Antminer-S7-4-73TH-Asic-Miner-4730GH-Newest-Btc-Miner-Better-Than-Antminer/32611434906.htmlIf you guys can tell me what do you think about it, I think I'll order this one because he offer a 1600W PSU with the miner and the shipping is for free ( and the vendor have 94.5% Positive feedback and they have been on aliexpress for 3 years.) but if you have better choices for me please let me know

I don't know this seller, but if i remember correctly, i've seen S7's on this forum going for around $400 (in BTC).
Given that the shipping is free, and you get a PSU, it might be a reasonable deal.
Don't forget: maybe the shipping is free, the customs charges might actually cost rather much. I know in some countries, those charges go up to 50 + 20% (or even more)