I don't know where you guys are but ammo availability is better than in the recent past and prices have been trending downward for the most part.
For example, 22 LR bricks in the form of Remington Thunderbolt has dropped to under $15/brick locally which is the same price or maybe slightly cheaper than the loose bulk packs by anyone else. The bulk packs may have a few more rounds but they tend to not be as accurate (at least in my guns) and I have a fair number of misfires with them. As for centerfire ammo, 223 Rem is readily available and has dropped about 25% in the last couple of months. One can find 55 gr FMJ rounds from PMC, American Eagle, Rem/UMC, Winchester White Box, etc. on the shelves in the $7.50-$8.00 range. Even Wolf can be found and is running in the $5 area. Same for 7.62x39 Wolf, I recently bought a case at $4 a box, not much different than a couple of years ago. Federal Blue Box ammo for common rounds such as 30/06, 270, 243, and 308 have dropped to around $14 a box and if one turns in the rebate form, they get back another $5 per box. 30/30 runs $2 a box cheaper with 7mm Rem mag and 300 Win mag running that much more. Remington Core-Lokt in the same calibers are a dollar or so more with Winchester Super-X and Federal Fusion $2-$3 more than that. Both these latter brands also have rebates available, Winchester allows 3 boxes rather than just two.
As for other chamberings, the prices are a lot more but have still dropped noticeably. Those for my 300 and 250 Savages were nearly $30 a box for a while but now have dropped to the $25 and $24 range respectively. I actually found some Remington 270 gr Core-Lokts in 375 H&H for $36 which is much better than the $48 the were last running. The standard calibers have seen some price drops in the standard product lines but the premium lines are still fairly high as are the newer "hot" chamberings in any brand. One pays a price for "new" in many cases. I have even seen price drops in some of my obscure chamberings, 22 Hi Power by both Norma and Sellier & Bellot have dropped, Norma from $56/box to $42 and S&B from $20 to $16.50. The S&B are OK in my guns but the Norma is much more accurate. I also think the Norma bullet is a bit tougher and a better choice when used on game at the large end of the appropriate sector.
There has been a drop in the availability of Surplus ammo, much of it has already been sold (especially in the case of older military ammo no longer in service) or in some cases, such as that from South Africa, not as easily imported. there were also a lot of Third World sources for modern rounds such as Guatemala for .223 but those factories are not in continuous production at the moment. There is also a bit more leniency in meeting "specs" for military ammo than in the past, tht is a large reason there was so little domestic "seconds" for a while. Now with either production catching up to demand or demand lessening there are more "seconds" appearing on the market though the prices are still fairly high.
Shotshells have also been dropping, DICK'S has shown a dollar a box drop in Remington Gun Clubs and Game Loads as well as a similar drop in the higher grade lines like Remington STS and Winchester AA. They are still gosh darn expensive but at $5 a box for the former and $7.50-$8 for the latter, it is less than it once was.
Handgun ammo is in a bit of a flux, some like the 9mm and 45 ACP have seen fairly decent decreases in price while others like the 40 S&W, 38 Spl, and 380 ACP have seen little change. The 357 mag may have even gone up a little in price, it has been so long since I bought them I can't be sure.
I will say ammo availability of some has decreased but that I feel is mainly due to the time of year. Most hunting seasons have ended or are soon to do so up here and that means little demand for a while. Stores have been stocking up on what is currently in demand and soon will turn more toward fishing and camping equipment as those seasons approach. I don't see the ammo situation changing any until towards the end of summer.