Over the weekend it seems lots of business closed the door here in the east coast, especially those parts supplier since the radiator for our 100 wasn't stocked at local shop/garage.
So for the radiator, my original thought to get the OE one for another peace of at least 150K miles. Lexus Rockville quoted me over
$1550 
before even having a technician actually checking. I'm sure the final will be at least $200 more since the fan shroud has broken tab. Talking to independent shop, the price is better bust still over $1000 for Toyota parts. Eventually, friend recommended a small shop who could just charge the same labor rate ($200) if I supply the parts which seems very reasonable. So I went hunting for the radiator.
355 Toyota's online store can get it ordered for $560+tax, but uncertain on how soon the order can be picked up. Over the counter at their parts dept., they insisted
$900 and can be picked up on Wed. Fitzgerald Toyota @Gaithersburg did give me the lowest price of $650 and can be picked up on Tue/Wed

. So with everything it should be done within $900.
At the meantime, the aftermarket option comes into my eyes also. RockAuto can deliver Denso radiator by Tuesday for
only $250! Also I found
this guide which got the radiator replaced without touching the fan. And best of all, only requires very basic tools. I knew the reviewing for Denso is mixed but I do believe the chance of good quality should be more than 80%. So the math became simple to me,
250 vs 900. The difference is
enough to cover the cost of 4 new AHC globes I just replaced over the holiday season.
Thanks for everyone's help. I will be trying to remove the radiator today while waiting for the new radiator, and will report back how it goes.