IT degree with A levels & 7 years of work experience

[PrettyFlyforaChiGuy]

Does anyone know which test would be cheaper, faster, and easier?
The prices I found from doing some research were: 
IELTS - 200$
TOEFL - 220$
SAT - 110$
ACT - 68$

I haven't heard much about the SAT or ACT; are they really common in the US?

I saw you already discovered it later in the thread, but the Duolingo English Test is definitely the best option. IELTS and TOEFL are both more onerous and expensive, while the DET can be done in 45-60 minutes at home for $49. I often advise international students to take it whenever it's accepted by their target unis. Conversations with some admissions officers have suggested it may be phased out at some unis now that COVID has let up. No idea about UMPI's plans, but they've been pretty great about increasing access for everyone.

Taking the SAT is not worth the trouble to demonstrate language proficiency, especially for an adult. Even the new slimmed-down digital version of the exam is still 2.5 hours, 70 minutes of which will be high school math problems. There's no age limit to take the exam but I know that here, most school testing centers wouldn't let you in anyway.