No, it's not, at all.
You can get one of the Seek's products for around as much money(~$200), some even brand new on sales.
The HT-02 and HT-175 use thermopile arrays, I believe from Heimann. I am certain the HT-175 uses a Heimann HTPA32x32d(of which I have a tube) - even the product photo has a photoshopped image from the brochure on it.
These are basically people counting devices, and they're really not great for thermal imaging(although the datasheet does provide temperature calculation formulas), not to mention inertia-prone and slow.
You certainly won't see much detail in insulation and almost none in low thermal gradients.
Not to mention it's useless for electronics fault finding, since it can't focus up close.