Fun game but in app purchases are WAY too much

I have the latest update, am at level 46, have over 12 000 000 points, have my town fully built with 11 free building real estate spots and only 2 ways to fill those 2 of the 11 spots with the new cars. If I want to purchase the diamonds to buy the two new cars and fill 2 of the available real estate spots it will cost me $120 real money. Seriously, this is a total RIPOFF !

slopro guy about Cars: Fast as Lightning, v1.3.1