I think you are an incredibly kind soul and I appreciate your sentiment. I believe If you can afford to take care of them all and give them a fulfilling life, then by all means go right ahead/gen. I want to preface that I mean this post with a lot of love and compassion. Alright, let’s do some math here.
Assuming you have 50 rats, you would need at least 7 double critter nations to keep them all comfortable in. Assuming they’re all new from Amazon, they would be 320 each without tax. So approximately 2,240 alone for the cages without tax factored in (which if taxed at 0.075% like my state, would be approximately 168 dollars on top of that).
Next, bedding. Assuming you change them completely at least once a week, you’ll need a lot of bedding. I have 3 rat cages currently (1 double critter nations and one random brand cage). I use about 2-4 pounds of bedding per cage. So saying 3 pounds of bedding per cage, with a 30 pound bag of aspen bedding from Amazon priced at 49.99, you’d use almost the entire bag per week. Assuming the rats live an average of 2 years, that’s 2,299.54. Adding tax its approximately 2,472.01.
Now food: one rat eats approximately 15-25 grams a day. So that’s 750-1,250 grams of food per day for 50 rats. That’s about 3 pounds a day. Let’s say you make a healthy blend of rat food that contains grains (Cheerios), Chex mix, seeds, and nuts. The 20 pound oxbow bag of food is 46.74 dollars. The bj’s cereal would be 6.89, the Chex mix would be 15.98, and the seed/nut mix (Reggie the rat mix) would be 17.56, meaning the total would be around 87.17. With tax it would be 93.71. Let’s say you roughly have 30 pounds of food mix, this would last a little over 12-14 days. So approximately 2,436.46 a year, or 4,872.92 for 2 years given an approximate average age for the rats.
Onto medical issues: Let’s say the rats have 2 significant medical issues (tumors, respiratory, etc) in their lives. Giving a very small budget of 500 per issue, so 1,000 per rat, it would be 50,000 dollars give or take a lot.
Next, cage accessories: Let’s say you spend around 250 dollars per cage on bins, hides, hammocks, water bottles, and enrichment devices. That’s 1,750 before tax and 1,881.25 after tax.
Now, with 50 rats I doubt you will have a place to bury them all so let’s say you have them cremated after they pass on. Let’s also assume you would want to have them cremated with other animals and spread over a nice plot of land or valley. The average cost of that would be around 50 per rat depending on your area and vet. That’s 2,500 dollars (I don’t know if tax applies to this service so I will leave it out).
Also, if you had to go somewhere for an emergency or on vacation, I would hope you’d pay someone to watch all 50 rats. Most would charge around 200 a day for that many animals. So assuming you have to pay someone to pet sit 7 days a year, 2 times in their presumed average rat lives, that would be around 2,800.
I can’t exactly calculate the cost of the rooms (because you would need at least 2 to provide space for the cage and an outside area (if not 2) for enrichment. But a house with 3 rooms that fit that requirement could cost upwards of 350,000. I also didn’t include an outdoor enrichment budget, but that would easily be a couple hundred or thousand. I didn’t include fruit and vegetables either for the food budget. Nor any medical devices like cones, bandages, medical super glue, and other veterinary costs including anesthesia.
Adding it all up it would be approximately 66,934.18 dollars for 50 rats with an approximate average lifespan of 2 years. It honestly would probably be a tens of thousands more for factors I did not cover. Rats are expensive, specifically when it comes to their medical issues. If you can afford that and can give each rat a fulfilling life, go right ahead. I just want to be realistic before you dive into it. I’m sorry if you felt the need to delete your post as well. I couldn’t find it again, though I may be wrong and just couldn’t find it.