I have been using a 'Brocade ICX6450 24 Port PoE switch' that I bought on eBay used for $150.  There is a forum, don't remember which one at the moment, where someone was kind enough to post firmware updates, licenses and a walkthrough on how to update it.  It has worked great for me so far, about 2 1/2 years now.  These originally cost a couple thousand dollars brand new.  Here is an example - a 48 port currently listed on eBay:
	
	
		
			
				
			
			
				
				Find many great new & used options and get the best deals for Brocade ICX 6450-48P 48-Port Gigabit Ethernet Switch at the best online prices at eBay! Free shipping for many products!
				
					
						
					
					www.ebay.com
				
			 
		 
	 
I started out with a simple 'TP-Link TL-SG1005P V2' 4 port (4 poe) for $45 from Amazon
	
 
	
		
			
		
		
	
				
			 
			
			 
			
				
			
		
		
		
	 
										
										
											
    
	
										
										
									
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