Looking for Lab enviroment recommendations

I'm currently preparing for the CCNA Security exam and would like to know what should be considered a good low-cost lab environment sufficient enough to pass the exam. Also looking for geeks that had passed the exam to give me some info that will be useful for me to pass it. I will take all the help I can get

Comments
Do you have any gear on hand already?
to run version 9.x of the asa software you will have to have at least 512mb of ram installed. it might run also with 1g stick installed. there is only one memory slot, but your testing my memory. and there is a limit on how big you can go. as in for the 5505, a 2 gb stick might not boot up.
If you want physical gear, I'd go with a 5506-X instead
then there is the security plus license. more or less doubles the capacity and users. and gives you a few extra features like a dmz and active/passive failover.
then there are a lot of niche licenses to enable other features that your not going to get tested on.
there are a lot of ebay sellers that will say "it was removed from a working environment". which isn't so bad. but if they cant tell you what the licensing is, they have never turned it on. I've seen enough bad units that I wouldn't buy one without knowing the license because then I know that it is functional.
unfortunately, those that take the time to know the licensing also know that being licensed for more things is worth more. and will charge as such.
and these come with a plastic case. and while it came from a working environment, they don't call removing equipment a "tear out" because of all the extra care they take. a cracked case might not bother you, but an uncracked case will sell better when you have finished taking your exam.
and lastly, they do come with a power brick. they do plug into the wall, but not with your standard computer power cord. So, make sure it comes with it or that you know what else your needing to buy. and be sure the wire isn't frayed or the connectors damaged.
but, the ram is just old ddr1 memory that came with a lot of computers a long time ago. go to a computer recycler and pick up a stick for a couple of bucks. 3 screws to remove the cover. take it apart to get the ram. take it with you so you get the same kind, only with a larger amount.
Labminutes has a lot of great video series, though most of it is well beyond CCNA Sec level. Udemy has a lot of great paid content (Baldev Singh's combined CCNA Sec/CCNP Sec deep dive is incredible, I picked it up during a promo after how highly recommended it came). And when all else fails, Cisco has great PDFs on every topic on their site that are a Google search away.
"Practice doesn't make perfect. Perfect practice makes perfect"
Vincent Thomas "Vince" Lombardi
Remaining courses: C846 (ITIL), C768 (OA), C850 (OA), C769 (Capstone)
Active Certifications: A+, CCDA, CCNA-R&S, CCNA-Security, CIW-SDA, i-Net+, Network+, Project+, Security+, Server+, Splunk Certified User, VCP-DCV
Expired Certifications: CCNP, LPIC-1, MCSE, RHCSE,