hey there debra, you've got to know that in fact, there is a bunch of pharmaceutical grade (aquarium) antibiotics that are available out there. in case you are being allergic to absolutely any of the ***cillians out there (I do know there are some people who are) then there are some ***myacin type of antibiotics that are available to you either (I am not very sure, but I can guess that KFLEX is one of them). I know that there is a link that it is listing them all out and I obviously suggest you to take a look at that link, just go on the healthy pets site and search for Thomas Labs Fish products, there's an list of that stuff that I am talking about which I hope would be helpful to both you and your husband and as you asked - they are cheap.
moreover, I really do not think that this is the cheapest place that you can order from that is why I recco shopping around. another thing I can tell you is that I did have seen this stuff on some of the shelves of some several doomsday preppers TV shows when they are touring the underground bunkers people build, so I think that you've got to search into it yourself either. it is true what has been said up there about the fish mox on the fact that it does work and that it is definitely safe for humans. at least it seems that I am a human myself (LOL) and I did have used this fish mox once (it has been quite some years ago, 3-4 years ago I guess) during the time that I have had a mild bronchitis and I can tell you that it didn't even not killed me only, but it also has worked fine for my bronchitis curing it. in fact, I can tell you that I am keeping some of that stuff around to have handy just in case something would happen and I would need it. in fact, I remember that when I've cured my bronchitis with it - I've got some left and I have thrown that leftover away that time (the rest that I have not used), however then I have ordered it back again (another bottle) when I realized that it might be a good idea to keep it around just in case. actually, I have went to the doctor the last week or so and that's even though I still had my doomsday supply of the fish mox around due to the fact that what I thought that I had (and in the end it turned out that it is true what I thought) a real bad case of sinus and inner ear infection. there I have got some augmentin prescribed which I could feel that is a lot much more stronger, it definitely is. but the price is also ""stronger"" LOL so you have to chose yourself.
I should say here that I neither endorse or am against those people who are using it or keeping some of it around. if you are intending/ planning on using absolutely any of them then you should try to find out and know what (just in case there are any) antibiotics that you are being allergic to them, what you are taking those antibiotics for as well as how much of that antibiotic it is advisable to take (because you can't simply take however much you want to and especially thinking that the more you take - the more helpful it is, because that's definitely not the case). in fact, I can tell you that I just think that the only thing that you can do to make it cheaper then it is to save doctor costs and hassles. gotta say that those basic antibiotics like those (such as amoxicilin, KFLEX) are usually either anywhere between $5 and $15 at the walmart if you are having a script for them. and the shipping times if you are thinking about ordering them only from the internet vet stores that are selling those items it is approximately one week (doubt that it would be less than a week, but it surely can be that it is going to be more than a week) and that's unless you are paying a lot out of your pocket for getting express FEDEX USPS etc. so this is just another factor in case you do need it right now. I would say that the internet is an option for you when you don't need the antibiotic right now but you need to have it around just in case.
and yeah, one last thing is that unfortunately I am having absolutely no clue of what kind of antibiotics are usually given (RX'd) for the dental issues as I have never had any dental issues so I never got any of them. maybe there are antibiotics that are best for something (for instance bronchitis) and other antibiotics that are best for other stuff (like dental issues) I am not sure and I can't say anything on this. either this helps or not am not sure, but I hope so.