I am assuming that the optimal price and pricing tier is out of scope for this discussion. The problem is company X as A,B,C,D,E Products and can the price be a,b,c,d,e ?

The answer is "ITS ALWAYS LIKE THAT" if you are selling 5 different product with can function independently and and got noting to do with each other. Like SOAP, SHOE, BAG, CAR and PENCIL ..

The moment you have 5 products that can be linked to each other, under the same umbrella (website or any other channel), we get into a situation of PARADOX OF CHOICE ! And this may hamper the conversion.

A simple way to solve the above issue is to keep separate landing pages and pricing details for each product. Check out https://www.atlassian.com/software

Another great example (not SaaS but the concept is same) is TESLA MOTORS. http://www.teslamotors.com/ They have 4 products. 2 are cars and the remaining 2 are battery related. It is a sub-portal within the site.

Getting into details
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Assuming that the product are related to each other (unlike tesla) there are 3 scenarios

A) Each Product is a standalone and not an extension of each other
. E.g ADOBE http://www.adobe.com/products/catalog/software._sl_id-contentfilter_sl_catalog_sl_software_sl_mostpopular.html
E.g Photo editing, Video editing, and Video distribution. The market segment or target market is same but each prospect may buy any 1 or 2 or all the 3

Strategy - (1) Avoid clutter and have sub-portals (2) Up-sell and Cross-Sell the most appropriate next buy (3) Provide a bundle one price deal (E.g COMCAST Phone + Cable + Internet for $99 a month. Each individually could cost $199)

B) Each product is a standalone but is also an extension to each other. It has the SYNERGISTIC EFFECT when integrated or used in the same ecosystem
E.g
OFFICE 365 (https://products.office.com/en-us/business/compare-office-365-for-business-plans)
ATLASSIAN (https://www.atlassian.com/software)

Strategy - (1) Tiers (Basic to Premium) as per your understanding of your target's behavior. This definitely needs experimenting E.g OFFICE 365. Each tier has different set of products too. (2) Consultative Cross Selling (E.g https://www.atlassian.com/purchase/product/jira-software ). When you buy JIRA, they suggests what else goes with it.

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The largest Product page I have ever seen is MICROSOFT AZURE (https://azure.microsoft.com/en-us/ ).
- More that 2 dozen products
- All different pricing, with trial and free offers
- A customer may need a combination of 5-6 products at-least to build a solution

strategy (1) Pricing calculators to relieve anxiety (2) Detailed documentation with use case and examples (3) Well done 'information architecture' (ia) while categorizing the various products under different groups.

Hope it helps...
Nefin