Mine aren't as thick, they are thinner, but I have more than that lol. 2 years down the road they've faded completely, they are like wrinkles (not appealing but at least not reddish purple anymore). Mine are deep. Stretchmarks are literally the result of your skin tearing > you can either have tearing in your epidermis (outer layer of your skin), which would be less deep and treatable by laser, stretch mark creams, microdermabrasion. However if your stretch marks are deep, it is likely your epidermis (middle layer of skin) is also affected- this is not currently treatable by laser etc. A tummy tuck would get rid of some, but probably not all, especially if they go up high, like naval & higher. So, basically if you have deep stretchmarks, you can spend all you want on fading them with treatments, bio oil, etc, but they will never totally go away.
Though I have heard of a new treatment called carboxy, where carbon dioxide is injected into your skin to the affected areas, which increases blood flow to the area- but I don't think that is even a miracle cure for strech marks. Also expensive and supposed to feel like bee stings